Whats the word that means that someone is forced to participate in war.

It could be drafted or conscripted.

what word would be better to use in a sentence like;

war sepereated families and took children away from their mothers due to ____________.

War separated families and took children away from their mothers by means of the draft.

(The phrasing "due to" is often misused. See #6: http://grammar.ccc.commnet.edu/grammar/plague.htm )

=)

thanks

The word you're looking for is "conscription" or "draft." It refers to the practice of forcibly enlisting individuals into the military or requiring them to serve in a time of war or national emergency. If you ever come across a word you're unfamiliar with, there are a few ways you can find its meaning. One option is to consult a dictionary, either a physical one or an online dictionary. Another method is to search for the word on a search engine like Google or Bing, and you'll usually be presented with various definitions and explanations from reputable sources.